Chemistry for Biologists

Photosynthesis

1. If light intensity increases in an atmosphere of excess carbon dioxide, the limiting factor on the rate of photosynthesis is most likely to be:
chlorophyll type
carbon dioxide concentration
light intensity
temperature
2. The greenhouse effect is likely to:
decrease the rate of photosynthesis globally
increase the rate of photosynthesis globally
reduce the rate at which carbon is incorporated into carbohydrate globally
have no effect on the rate of photosynthesis globally
3. Phosphoglyceric acid (PGA) is formed when carbon dioxide is fixed onto the 5C compound:
adenosine monophosphate
nicotinamide adenine dinucleotide phosphate
ribulose bisphosphate
edenosine triphosphate
4. The first stable product of the Calvin Cycle is:
NAPD
PGA
ADP
ATP
5. In the light-independent stage carbohydrate is synthesized from:
ADP
NAPD
PGA
ATP
6. In photosynthesis, carbon dioxide is fixed during:
the light-dependent stage
the light-independent stage
cyclic phosphorylation
non-cyclic phosphorylation
7. In photosynthesis, excited electrons leave a chlorophyll molecule during:
the light-dependent stage
cyclic phosphorylation
the light-independent stage
non-cyclic phosphorylation
8. In photosynthesis, oxygen is produced during:
the light reactions
the light-dependent stage
non-cyclic phosphorylation
cyclic phosphorylation
9. In photosynthesis, carbohydrates are produced during:
non-cyclic phosphorylation
cyclic phosphorylation
the light-independent stage
the light-dependent stage
10. The two principal stages of photosynthesis are:
photolysis and ATP synthesis
photosystem I and photosystem II
cyclic and non-cyclic phosphorylation
the light-dependent and light-independent reactions

 

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